Smoke-consuming apparatus.



No; 658,432. Patented Sept. 25, I900. H. L. FLEMING.

SMOKE CONSUMING APPARATUS:-

(Application filed May 16. 1900.)

(No IodeL) INVENTOR:

ATTEST:

; ATENT Fries.

IIENRYL. FLEMING, OF NEW YORK, N. Y.

SMOKE-CONSUMING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 658,4 dated September1900- Application filed May 16, 1900. Serial No. 16,845. (No an.)

To all whom it may concern:

Be it known that I, HENRY L. FLEMING, a citizen of the United States,and a resident of the city of New York, in the county of New York andState of New York, have invented certain new and useful Smoke-ConsumingApparatus, of which the following is a specification.

This invention relates to that class of devices designed for theconsumption or prevention of smoke when operated in connection withfurnaces of steam-boilers, thereby economizing fuel, and is moreparticularly adapted for locomotive-boilers, though not restrictedthereto; and it consists in the methods employed to control theadmission of the required steam-injected air-blasts, all as hereinaftermore fully described, my objects being to simplify the construction ofapparatus and to dispense with such portions previously employed whichhave necessitated frequent renewals by reason of rapid deterioration.

In the accompanying drawings, Figure 1 is a sectional side elevation ofthe furnace of an ordinary locomotive-boiler. Fig. 2 is a plan View ofsame, taken below the dotted line X X, shown in Fig. 1; and Figs. 3 andi show modified forms in which it is possible that my in vention may beapplied, the latter being an enlarged or detail View of a proposedcoveringblock.

Similar letters of reference indicate like parts throughout.

The letter A represents generally the boiler, B the furnace or fire-box,O the grate, D the ash-pan, and E the tines, all of which may bepresumed to be of the usual and ordinary forms of construction. In thewater-leg F, forming part of the rear wall of said furnace, I insert ina suitable manner a series of short tubes G, the number of samedepending upon requirements, these said tubes not projecting withinfurnace, as heretofore customary, but simply serving to form orifices toprovideducts or passages for the admission of the steam-injectedair-blasts before mentioned. 7

By H is represented the usual manifold or steam-supply pipe, havingsuitable communication with the steam-space of boiler, regulated byproperly-located valve, and which has inserted therein small branchpipes or nozzles h, corresponding in number to the airducts G, for thepurpose of producing forced draft through said air-ducts, as shown inFigs. 1 and 2.

Within the furnace, as indicated by letter J, is located the usualfirebrick arch, composed of transverse slabs and which, as customary,are placed so that a narrow opening is left between the rear of arch andflue-sheet K of boiler. Crossing this space, directly above theair-ducts G, forming intervals Z, I propose to place blocks or covers M,of fireclay or other suitable material, which may be retained inposition by being notched into the rear slab of arch and by lugs n,projecting fromsaid flue-sheet, shown. As a modification of the abovearrangement, the said arch may be composed of several slabsj of theusual pattern, but having instead the rear slab j, with the covers Mprojecting therefrom and forming integrally a part of same, as shown inFig. 3. As a still further modification the form of block M" shown by 4may be used for the proposed covering purposes.

In describing the operation of my improved device it is unnecessary toexplain the wellknown functions of the baffling-arch or the applicationof forced air-drafts to assist combustion; but I desire herein toillustrate that as openings must be provided between the said arch andthe flue-sheet to admit a portion of the flames and heat to the lowerfines of boiler some method must also be employed to prevent the blastsof air from being drawn in the same direction immediately upon enteringthe furnace and to insure the same being carried forward under the archsufficiently to become properly heated, so as to ignite and accomplishthe complete combustion of the gases This has been attempted heretoforeby the adoption of in wardly-proj ect-ing tubes, which, althoughprotected to a certain degree and by various means from the destructiveaction of the heat, have soon from this cause become unservieeable. Bythe insertion of the said coveringsin the manner and of either of theforms described the air-blasts will be relieved from the influence ofthe backward suction above mentioned and be permitted to pass under thearch to efiect the desired results, the fireproof material of which saidcovers are composed preventing undue deterioration. As considerablevariation exists in furnaces of different construction, it is obviousthat modified forms of coverings must be used to meet the requirements,and I therefore reserve this privilege, as far as the same may beadmissible, without departing .fIODl the nature of my invention, andalso, if found more desirable, I propose to substitute compressed airfor the steam-jets in producing the forced drafts.

Ihereby disclaim all intention to control any of the well-known featureswhich have been herein described merely to show the connection of myimprovements; but

\Vhat I do claim, and desire to secure by Letters Patent, is-

1. In a smoke-consuming apparatus for boiler-furnaces, the combinationwith a bafflingarch spaced from the flue-sheet of boiler, and ducts orpassages leading into furnace through said flue-sheet provided withsuitable means for producing forced air-blasts, of the 'furnace, asteam-supply pipe having nozzles to produce forced draft through saidairducts, and fireproof covers bridging the space between the arch andflue-sheet immediately above air-ducts, substantially as and for thepurpose specified.

Signed at the city of Atlanta, in the county of Fulton and State ofGeorgia, this 14th day of May, A. D. 1900.

HENRY L. FLEMING.

Witnesses:

WILLIAM J. NALLEY, LEWIS J. LAIRD.

It is hereby certified that in Letters Patent No. 658,432, grantedSeptember 25, 1900, upon the application of Henry L. Fleming, of NewYork, N. Y., for an improvement in Smoke-Consuming Apparatus, an errorappears in the printed specification requiring correction, as follows:In line 71, page 1, the reference letter M should read M; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the record of the case in the Patent Offioe.

Signed, countersigned, and sealed this 16th day of October, A. D.. 1900.

[SEAL] F. L. CAMPBELL,

Assistant Secretary of the Interior. Oountersigned C. H. DUELL,

Commissioner of Patents.

